<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>鼠标相关属性</title>
  <style>
    div {
      width: 400px;
      height: 400px;
      background-color: skyblue;
      cursor: pointer;
    }
  </style>
</head>
<body>
  <div>
    把鼠标放进来看一看
  </div>
</body>
</html>